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II-Metossi-diabolina: un nuovo alcaloide terziario da Strychnos Romeu Belenii Krukoff & Barneby

Rendiconti Lincei - Matematica e Applicazioni
European Mathematical Society Publishing House
Publication Date
  • Metossi-Diabolina
  • Alkaloids
  • Strychnos Romeu


From the stem bark of Strychnos Romeu Belenii Krukoff & Barneby a Loganiacea of South America, a new indolinic alkaloid has been isolated, to which the structure of II-methoxydiaboline(I) has been assigned on the basis of u.v., i.r., n.m.r., o.r.d., and MS data. The structure has been confirmed by converting I in α -colubrine(II) through the N-deacetylderivative(III) (II-methoxy-Wieland-Gumlich aldehyde), and by acetylation to isocondensamine isomer of condensamine(X). II-methoxy-Wieland-Gumlich aldehyde by heating with acetic acid and sodium acetate is converted into the dimeric II,II'-dimethoxy-caracurine V (XI)

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